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(: Test: K-SeqSUMFunc-33                                 :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:23+01:00                       :)
(: Purpose: A test whose essence is: `sum((xs:yearMonthDuration("P20Y"), (3, 4, 5)))`. :)
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sum((xs:yearMonthDuration("P20Y"), (3, 4, 5)))